12 best lab filtering funnels
Lab filtering funnels are essential pieces of equipment used in laboratory settings, particularly in chemistry and biology. They are designed to facilitate the separation of liquids and solids by passing a liquid through a filter medium while retaining the solid particles. Here's what you should know about lab filtering funnels:
Purpose: Lab filtering funnels are primarily used for the process of filtration. Filtration is a common technique in laboratories to separate solids from liquids or to remove impurities from a liquid.
Components: These funnels typically consist of a funnel-shaped glass or plastic body and a filter medium. The filter medium can be a filter paper, a membrane, or other porous materials that allow the liquid to pass through while trapping solid particles.
Types of Funnels:
- Büchner Funnel: This type of funnel is commonly used in vacuum filtration setups. It has a flat, perforated base that allows for suction filtration using a vacuum flask or pump.
- Hirsch Funnel: A Hirsch funnel is similar to a Büchner funnel but is designed for gravity filtration without the need for a vacuum source.It is often used for smaller-scale filtrations.
- Separatory Funnel: While not used for solid-liquid filtration, separatory funnels are used for liquid-liquid separations, often in organic chemistry.
Applications: Lab filtering funnels find applications in various scientific disciplines, including chemistry, biology, and environmental science. They are used for tasks such as removing precipitates from a liquid, separating suspended particles from a solution, or isolating specific compounds from mixtures.
Filter Medium: The choice of filter medium depends on the specific requirements of the filtration process. Filter papers with different pore sizes are available to accommodate various particle sizes and filtration rates. Membranes with specific properties may also be used for specialized applications.
Cleaning and Maintenance: Proper cleaning and maintenance of lab filtering funnels are essential to ensure accurate and consistent results. This includes regularly changing the filter medium, cleaning the funnel body, and ensuring that there are no leaks or blockages in the setup.
Safety: When using lab filtering funnels, it's important to follow safety protocols, especially when handling potentially hazardous chemicals. Proper personal protective equipment (PPE), such as gloves and safety goggles, should be worn, and work should be conducted in a well-ventilated area or within a fume hood if necessary.
Availability: Lab filtering funnels are readily available through scientific supply companies and can be purchased in various sizes and materials, including glass and plastic, to suit different laboratory needs.
Lab filtering funnels are essential tools in scientific research and analytical laboratories, aiding in the separation and purification of substances for a wide range of applications. Proper usage and care are crucial to obtaining reliable and accurate results in laboratory experiments.
Below you can find our editor's choice of the best lab filtering funnels on the market
United Scientific Supplies JBF1150 Buchner Funnel, 1150 ml, Diameter 150 mm
United Scientific Supplies
Product description
Thermal Shock Resistance - average coefficient of expansion from 20° C to 200° C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1050°C. Every batch of porcelain is heat tested in our factory. Glaze - No softening occurs up to 1000°C, and it is extremely white. Resistance to Chemical Action - Resistance to acids and alkalies is excellent, except for hydrofluoric acid.
User questions & answers
| Question: | is this funnel intended for use with a 150mm dia filter paper |
| Answer: | This all depends on the quality of your water and usage. This system can filter up to 750 gallons of drinking water before replacing the filter. Hope this helps. |
| Question: | What is the dimension of the widest part of the funnel stem? This is to see if it will fit in my flasks. Thanks |
| Answer: | Yes, this filter will leave minerals in your water but it will filter the bad contaminants. To correct user Allumaman - this filter uses a 0.5 submicron carbon block filter, it does not use a 20 micron filter. |
Filter Flask Set, 500ml with Funnel, Stopper and Filter Paper
MHB
Product description
For vacuum filtration, this kit includes 500ml filter flask, 9cm porcelain buchner funnel, 9cm filter paper (100 pack), pre-drilled rubber stopper and 3/8 in. vacuum tubing with a 1/4 in. adapter sleeve.
User questions & answers
| Question: | What size (diameter) filter paper does this use |
| Answer: | what micron size filter |
| Question: | Can this be autoclaved |
| Answer: | This flask is very poorly made. It has bubbles in the glass. I don't know how it would stand up to autoclaving, but I don't trust it. |
| Question: | What are its dimensions |
| Answer: | The flask is bigger than a standard 500ml Pyrex erlynmeyer flask, but #7 stopper fits so mouth is the same. 7 3/4" tall by around 4 3/8" at widest diameter. Funnel is 1 3/4" deep by 3 5/8" ID around 9cm where paper sits. This tapers into a 3" stem and overall about 16cm total funnel length. Hope that helps, it's functional for the price, but a vac pump and fritted disk type funnel(magic) and that's why $200-300+ is needed for that setup. |
| Question: | Its there anything holding the paper in place so there is no way for anything to bypass the paper and not be filtered |
| Answer: | The paper does not secure very well around the sides. In fact, most paper filters will shed residue. I finally had success with singed polyester felt filter (for perfume filtering). They carry it in different forms on Amazon. You can buy it in different micron standards (depending on your needs). Good luck to you. |
QWORK 500ml Filtering Buchner Funnel Medium Frit (G2) Lab Glassware with Standard 24/40 Joint and Vacuum Serrated Tubulation, 94mm I.D, 100mm Depth
QWORK
Product description
Feature:
Made of borosilicate glass, it has the advantage of excellent physical and chemical resistant.
The Pore Size is G2, which max. size is 40~80μm
Package:
1 x Filtering Buchner Funnel
- High Quality - Made of borosilicate glass, it has the advantage of excellent physical and chemical resistant.
- Medium Frit - The Pore Size is G2, which max. size is 40~80 μm.
- Specification - The inner diameter is 94mm with the 24/40 standard joint.
- Capacity - The capacity is 500ml.
- 100% Satisfied Service - Enjoy a smooth & frustration free experience with our 100% Satisfied Service in one Month!
User questions & answers
| Question: | what size tubing should I use with this |
| Answer: | mine came stack in a cone and they hold their shape |
| Question: | What size filters should I use and do you have any for sale |
| Answer: | The filter replacement part number is CBSM-2510, if you search for the following ASIN it will pull it right up: B079SYLGYT Here is a direct link to the item: http://a.co/d/8GIfaAL Please check the item listing for current pricing on the replacement filter. Hope this helps. |
StonyLab Porcelain Buchner Funnel 100mm, Porcelain Buchner Filter Funnel OD 10cm ID 9.2cm for Laboratory
StonyLab Scientific
Product description
SKU:XL-815340
Why Choose StonyLab?
1. The StonyLab means high-quality products for reasonable prices.
2. We boast excellent customer service with a high satisfaction rating, with our team of representatives ready to assist you Monday to Friday, from 9:30AM to 5:30PM Eastern Time.
3. We pack and ship your orders directly from our US-based warehouse within 24 business hours, and tracking information will be provided to you as soon as it's available.
Description
With fixed perforated plate.
Glazed on inner and outer surface with exception of rim.
100mm outer diameter, 92mm inner diameter.
Excellent resistance to acids and alkalis.
StonyLab ensures high quality and premium customer service.
- With fixed perforated plate
- Glazed on inner and outer surface with exception of rim
- 100mm outer diameter, 92mm inner diameter
- Excellent resistance to acids and alkalis
- StonyLab ensures high quality and premium customer service
User questions & answers
| Question: | What is the correct rubber stopper to fit the 100mm size funnel |
| Answer: | approximately 5" diameter and 14" length |
| Question: | what's the diameter of the stem |
| Answer: | Obviously that is not the intended use of the product and would probably require FDA certicication. I would, however, not have a problem using them in the kitchen for food I would consume. Hope that helps. |
| Question: | What size filter paper does this funnel require |
| Answer: | 190 micron is to fine for latex. |
| Question: | Will this fit a 24/40 flask opening securly or do I need a rubber stopper |
| Answer: | Yes it can,however, if you have a full can, you will have to hold up the strainer so the paint can drain into the can. |
Filter Flask Set, 1000ml with Funnel, Stopper and Filter Paper
MHB
Product description
For vacuum filtration, this kit includes 1000ml filter flask, 9cm porcelain buchner funnel, 9cm filter paper (100 pack), pre-drilled rubber stopper and 3/8 in. vacuum tubing with a 1/4 in. adapter sleeve.
User questions & answers
| Question: | What kind of filter paper? Slow, medium |
| Answer: | I’m not sure what they are made out of but they are inert and can withstand pressure cooking autoclaving. |
| Question: | What micron size is the filter paper |
| Answer: | This will filter out dirt, rust and sediment. It is would be effective on the hot water supply to a washing machine. |
Lab Vacuum Filtration Distillation Apparatus 250mL -1000ML Filtering Flask with Funnel and Pump Glass Suction Filtering Kit for Reduce The Pressure in The Filter Bottle Physical Experiment (500ml)
QingYi
Product description
Filtration Apparatus:
1×250-1000ml filter bottle
1 × funnel
1×pump
1× latex tube
- Materials: borosilicate glass
- Filter Flask Capacity: 250-1000ml
This vacuum filtration apparatus is perfect for education, research, testing and other non-medical use. Disclaimer: This item is not intended for medical uses.
- 1.GLASSWARE MEETS LABORATORY STANDARDS: The places that directly contact with the solution of the filtration apparatus is made of silicate glass, which is tough, durable and heat-resistant designed to handle boiling liquids and strong vacuums.
- 2. VACUUM FILTRATION WITH WIDE APPLICATION: Vacuum filtration allows you to filter oil and water-soluble solutions without damaging or losing heat-sensitive compounds during distillation. Suitable for lab, chemical, biological analysis, environmental monitoring, industrial and scientific research.
- 3. PURE SOLUTIONS: The filtering lab flask can be used to separate components or impurities in your mixtures or solutions. The filtration apparatus is built to last with tough, heat resistant borosilicate glass designed to handle boiling liquids and strong vacuums. The glass is packaged tightly and thoroughly inspected to guarantee you receive an unblemished product.
- 4. MANY USES: Use the 1000mL filtering flask for chemistry experiments in the lab or school; to make e-juice, distilling, concentrate and oils; to filter essential oils and plant extracts; to make soap; and more!
- 5. FAST FILTERING ACTION: The filtering and distillation kit can be used with or without a vacuum. For faster, higher volume jobs, just hook up a vacuum hose to the filtering flask and quickly pull your solution through the funnel.
StonyLab Borosilicate Glass Buchner Filtering Funnel with Coarse Frit(G1), 94mm Inner-Diameter, 100mm Depth, with 24/40 Standard Taper Inner Joint and Vacuum Serrated Tubulation (500ml)
StonyLab Scientific
Product description
SKU: XL-815055
Description
StonyLab borosilicate glass buchner filtering funnel with coarse Frit with 24/40 standard taper inner joint and vacuum serrated tubulation
Warranty: If received damaged, please contact us immediately. We will solve it until satisfied.
- G1 80~120 μm Nominal Max. Pore Size; compatible with StonyLab Qualitative/Quantitive Filter Paper Circles in 94mm diameter
- 24/40 Joint
- 500ml Capacity
- Glass buchner filter funnels; made of high quality glass
- StonyLab ensures high quality products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfied
User questions & answers
| Question: | Which filter should I get for a 75 to 100 micron filtration |
| Answer: | The diameter might differ from funnel to funnel and therefore I could not give you a definite answer, but what I can say is that it typically uses the #4 size silicone collar adapter and that is 35mm on the wider side of OD. |
| Question: | For the 250ml funnel, it says the disk is 85mm, how big should the filter papers be? 85mm? Thanks |
| Answer: | Possibly... I used them for air filtration. If you are filtering large amounts of ethanol, I think a larger system may be required. |
| Question: | What size filter paper |
| Answer: | It is safe material, highly durable and have a filtration rate of 99.97% that means they will filter down to .3 microns. I am not sure if it can be used for facial mask ,but someone has bought it for COVID-19 ,so I think you can try, |
| Question: | what is the advantage or disadvantage to the funnel having two chambers in the neck |
| Answer: | dear yes ,the Filter Discs is 90mm do not have to be cut to be 90mm |
Filtering Flask, 5000ml - Borosilicate Glass - Heavy Walled - Conical Shape, with Integral Side Arm - White Graduations - Eisco Labs
Eisco
Product description
Flask is heavy walled made of borosilicate glass. The opening is 2 inches inner diameter so use a #12 or #13 stopper. The barbed glass side arm accepts a vacuum hose. The 3.3 borosilicate is prefect for heating and cooling as it has a low coefficient of thermal expansion. The flask is typically used to create a vacuum and filter solutions. Flask also works as a Buchner flask for filtering solutions in chemistry, physics, and life science labs and educational settings.
Flask measures 15" tall, and it's base is 9" in diameter. Neck has an inner diameter of 52mm (2") and an outer diameter of 60mm (2.4"). Side arm measures 1.6" in length and is 12mm in diameter. Inner diameter of arm is 5mm.
Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.
Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control.
Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.
- 5000ml Capacity Flask with barbed side arm for filtering
- 500ml graduations
- Heavy boroscilicate glass walls
- Top opening diameter is 2 inches so use a #12 or #13 stopper
- Glass has no defects and a perfectly flat bottom, will sit perfectly on a hot plate or stirrer
User questions & answers
| Question: | What is the size of the side arm |
| Answer: | Dear customer, It fits a 24/40 flask and you need a rubber stopper. Thanks, J&D Tech |
| Question: | What is the diameter of the base at the widest point |
| Answer: | Fits 10mm (0.39inch) tubing |
| Question: | how much vacuum, in mm Hg, can this 5,000-ml flask hold |
| Answer: | Dear customer,This is suitable for a filter paper circle with a diameter of 94mm, we do not sell this product, maybe you need to buy it in other stores |
| Question: | what is the diameter of the side arm |
| Answer: | Yes, this uses 15 cm filter paper. |
JOANLAB Glass Laboratory Vacuum Filtration Distillation Apparatus,1000ml Filter Flask Set Graduated Lab Suction Apparatus for Filtering
JOANLAB
Product description
JOAN LAB a manufacturer which has more than 12 years experience in the field of lab products. We stand behind the production of all of our products and take the risk out of ordering with our 100% satisfaction guarantee.
- Filtration Apparatus:
- Materials: borosilicate glass, rubber, aluminum
- Filter Flask Capacity: 1000ml
- Graduated Funnel Capacity: 300ml (50mL graduations for quick, easy measurement)
This vacuum filtration apparatus is perfect for education, research, testing and other non-medical use. Disclaimer: This item is not intended for medical uses.
- PURE SOLUTIONS: The filtering flask can be used to separate components or impurities in your mixtures or solutions. The filtration apparatus is built to last with tough, heat resistant borosilicate glass designed to handle boiling liquids and strong vacuums. The glass is packaged tightly and thoroughly inspected to guarantee you receive an unblemished product.
- LAB QUALITY, MANY USES: Use the 1000mL filtering flask for chemistry experiments in the lab or school; to make e-juice, concentrate and oils; to filter essential oils and plant extracts; to make soap; and more!
- FAST FILTERING ACTION: The filtering kit can be used with or without a vacuum diaphragm pump. For faster, higher volume jobs, just hook up a vacuum hose to the filtering flask and quickly pull your solution through the funnel. Vacuum filtration allows you to filter oil and water soluble solutions without damaging or losing heat-sensitive compounds in a distillation. This filtering flask comes with a high quality rubber stopper and aluminum clamp that allow for strong vacuums.
- EASY TO USE: The kit can be set up in minutes and is easy to disassemble, clean and store. The 1000mL filtering flask can handle larger jobs. The 300mL graduate funnel allows for easy measurement, unlike most Buchner funnel apparatuses. Best used with 50mm, 10μm membrane filter paper.
- DRIECT FROM MANUFACTURER : JOANLAB is a manufacturer which has more than 11 years experience in the field of lab products. No middlemen .
User questions & answers
| Question: | Puede utilizarse con filtro de diámetro 4.7 cm (1.85 in |
| Answer: | The filter I purchased was a 60mm not a 100mm. The 60mm refers to the outside diameter of the funnel. I am using a fine screen which is 1.875 inch (47.6mm) in diameter rather than a standard filter paper. Assuming the wall thickness of the 100mm filter is not much different from that of the 60mm filter, you probably could use a 90mm diameter filter paper. If you are going to be using vacuum to filter ( I am not), the required diameter of filter paper only has to cover the holes in the bed of the filter rather than the entire inner diameter so perhaps 80mm diameter paper would do. |
Deschem 24/40 Glass Buchner Filtering Funnel with Fine Frit Vacuum Serrated Tubulation Lab Borosilicate Glassware (350ml, 4# Coarse)
Deschem
Product description
Deschem 24/40 Glass Buchner Filtering Funnel With Fine Frit Vacuum Serrated Tubulation Lab Borosilicate Glassware
1.Made from borosilicate glass 3.3.
2.Buchner Funnel with 24/40 Standard Ground Taper Joint.
3.Capacity is 5000ml 3000ml 2000ml 1000ml 500ml 350ml 250ml 200ml 150ml 100ml 60ml Available.
4.Coarse Filters imformation
1# Coarse Filter:Filtration Pore Diameter is 80-120 Micron
2# Coarse Filter:Filtration Pore Diameter is 40-80 Micron
3# Coarse Filter:Filtration Pore Diameter is 15-40 Micron
4# Coarse Filter:Filtration Pore Diameter is 5-15 Micron
5# Coarse Filter:Filtration Pore Diameter is 2-5 Micron
6# Coarse Filter:Filtration Pore Diameter is <2 Micron
5.With 10mm hose Connection.
6.The inner diameter of the funnel
2000ml 143mm-145mm
1000ml 112mm-114mm
500ml 91mm-93mm
350ml 82mm-84mm
250ml 74mm-76mm
200ml 68mm-70mm
150ml 64mm-66mm
100ml 53mm-55mm
60ml 42mm-44mm
- Made From Borosilicate Glass 3.3
- Annealing Point ------560℃
- Linear Coefficient of Expansion------ 32×10-7/℃
- Softening Point------820℃
- Deschem Science Supply
StonyLab Borosilicate Glass Buchner Filtering Funnel 500ml with Medium Frit(G2), 94mm Inner-Diameter, 100mm Depth, with 24/40 Standard Taper Inner Joint and Vacuum Serrated Tubulation (500ml)
StonyLab Scientific
Product description
SKU: XL-815053
Description
StonyLab borosilicate glass Buchner Filtering Funnel with medium frit with 24/40 standard taper inner joint and vacuum serrated tubulation
StonyLab ensures products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfieds
- G2 40~80 μm Nominal Max. Pore Size
- Compatible with StonyLab qualitative/quantitive filter paper circles in 94mm diameter
- 24/40 Joint; 500ml capacity
- Glass Buchner Filter Funnels; made of high quality glass
- StonyLab ensures high quality products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfied
User questions & answers
| Question: | What size tubing would be appropriate for the underside of the funnel (not the vacuum serrated tubulation |
| Answer: | What are you filtering and how powerful is your suction ... I use a few different papers for my gold and silver work.. I use a medium quantitive for general use and a slow quantitive for final filtration before precipitating out my gold to ensure the cleanest possible solution giving me the cleanest gold ..... |
| Question: | What diameter filter paper does this require |
| Answer: | 11 microns |
| Question: | Is the frit removable |
| Answer: | Dear Customer, Here is the link for the rubber stopper fitting with 100mm size funnel: https://www.amazon.com/dp/B07MLJSWDN?ref=myi_title_dp Thanks, StonyLab |
| Question: | What filter paper sizes are compatible with this filter |
| Answer: | Dear Customer, Kindly note that the outer diameter of the stem is 18mm-22mm, inner diameter is 9.5mm-10.5mm. There will be an error of about 0.5mm. Thanks, StonyLab |
Labasics Borosilicate Glass Buchner Filtering Funnel with Coarse Frit (G1), 76mm Inner Diameter, 80mm Depth, with 24/40 Standard Taper Inner Joint and Vacuum Serrated Tubulation (250ml)
Labasics Scientific
Product description
Description
G1 80~120 μm Nominal Max. Pore Size
24/40 Joint
Glass Buchner Filter Funnels
250ml Capacity
[Warranty] If received damaged, please contact us immediately. We will solve it until satisfied
- G1 80~120 μm Nominal Max; Pore Size
- 24/40 Joint
- Glass Buchner Filter Funnels
- 250ml Capacity
- Warranty: If received damaged, please contact us immediately; We will solve it until satisfied
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